A wire 100 meter long at 20 °C has a linear temperature coefficient of 2 * 10-5. The wire is heated and expands to a length of 100.01 m. What is the final temperature?

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Q: A built up column consist of two channels C 450 x 42.7 and one cover plate 500 mm x 12 mm. The…

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Q: Statement (1): The trap efficiency of a reservoir increases with age as the reservoir capacity is…

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Temperature Difference and Heat Transfer

Whenever there is a flow of heat flux resulting from a temperature gradient within the material or between two materials, there is heat transfer. Heat transfer primarily arises due to temperature differences between two bodies or within bodies. The term temperature gradient denotes temperature differences or variation of temperature due to change in some quantity. The fundamental use of the concept of temperature is found in the zeroth law of thermodynamics.